MICROCHEMICAL JOURNAL
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2025
·
IF 5.1
Lei Zhang,Zhen Zhao,Hongming Zhang,Wanli Jiao
To detect trace hydrogen sulfide (H 2 S) safely, more sensitively and less expensively, a new synthesized ZIF-8-derived ZnO-supported Ag nanoparticle assemblies have been investigated. In the successful formation, ZIF-8 was synthesized in room temperature aqueous solution, followed by ultrasonication to produce Ag + /ZIF-8 compounds, and yielded Ag/ZnO assemblies after sintering. Various characterizations have been done to confirm the morphology, surface chemical state and electron distribution by XRD, SEM, XPS, BET and DRIFT. The sensing test results indicate that at an exciting operating temperature of 100 °C, the A-2 labeled sensor exhibits excellent H 2 S detection capabilities, including a response value of 104 for 2.5 ppm H 2 S, the minimum detection limit of 1.1 ppb, satisfied selectivity, significant resilience against humidity and long time stability. More significantly, a valuable test of 140 h real time detection of the H 2 S emission from fresh fish meat has been performed successfully, providing effective data for protein spoilage assessment. Rhombic dodecahedron structure, catalysis of Ag nanoparticles and overflow effect of H 2 S result in the distinct sensing mechanism, providing novel insights and theoretical foundations for developing highly efficient trace H 2 S gas sensors.
研究领域:
材料科学
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传感器技术
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环境监测
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2021
·
IF 7.46
Chengyu Yang,Ying Yang,Chengxin Zhang,Hui Yu,Tingting Wang,Keying Shi,Zhuanfang Zhang,Dongjie Wang,Xiangting Dong
In this paper, a simple method to synthesize Ag-doped Fe 2 O 3 hollow nanofibers by electrospinning was reported. The synthesized samples were fabricated into gas sensors, and their sensing properties were studied systematically. The results showed that the Ag-doped Fe 2 O 3 materials were hollow tubular structures and had high response (R a /R g = 19.43), selectivity and sensitivity to H 2 S at room temperature. The response mechanism of the sensor to H 2 S was studied by DFT, O 2 -TPD and H 2 -TPR. It was considered that the excellent gas sensing performance of the sensor was that the Ag-dopant increased the concentration of carriers, adsorbed oxygen and lattice oxygen. The rough hollow structure was conducive to gas adsorption and capture, which provided many active centers for the sensing reaction. Therefore, the Ag-doped Fe 2 O 3 nanofibers with hollow structure will have promising uses as sensing material in future applications.
研究领域:
材料科学
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传感器技术
✓ 已验证
DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
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2021
·
IF 3.196
Chenglu Zhang,Lu Zhang,Yuqing Li,Zhixuan Ren,Lu Li,Yanpeng Zhang,Yizheng Li,Cui Liu
A novel 1,8 - naphthalimide - ebselen fluorescent probe BPHN was synthesized. BPHN has great fluorescence properties: high quantum yield (0.5932), large Stokes shift (125 nm) and remarkable stability at wide pH range (5–11). The results of fluorescence spectroscopy experiments show that BPHN can recognize H 2 S selectively and sensitively. BPHN exhibits low LOD (0.129 μM) and fast response (90 s). The potential of BPHN as a biosensor for H 2 S was demonstrated by imaging of exogenous H 2 S in living cells. BPHN can also detect H 2 S qualitatively and quantitatively in actual water samples.
研究领域:
生物化学
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医学检测
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2024
·
IF 8
Hairui Fang,Hong Chen,Feng Zhang,Rong Tan,Chenshuai Han,Xin Ai,Xiao Ma,Yiwen Cui,Dong Wang
Sulfur hexafluoride (SF 6 ) from Gas Insulated Switchgear (GIS) will decompose and produce hydrogen sulfide (H 2 S) in the event of equipment failure. Therefore, the detection of H 2 S can determine whether the equipment has malfunctioned. Due to the low concentration of the SF 6 decomposition product H 2 S and its application in industrial environments, sensors must have a low detection limit and rapid response time . Considering that the oxides of rare earth elements can improve the sensing characteristics, praseodymium oxide (Pr 6 O 11 )-indium oxide (In 2 O 3 ) was prepared. The impact of Pr 6 O 11 doping on In 2 O 3 was investigated through characterization methods. To validate its feasibility for use in GIS, the best sensor (F3) exhibits good sensing characteristics for H 2 S in the SF 6 and air ambient. The responses to 10 parts per million (ppm) H 2 S at 190°C were 146.6 in SF 6 and 190.8 in air. In SF 6 ambient, the F3 sensor demonstrated a low detection limit (50 parts per billion (ppb)). The good sensing characteristics are attributed to the doping of rare earth elements, which induces an increase in the proportion of defect oxygen and accelerate the chemical reaction. The sensing characteristics of the material can be attributed to the doping of Pr 6 O 11 and the electronic effect. This study provides a novel approach for detecting H 2 S generated from SF 6 decomposition.
研究领域:
材料科学
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电气工程
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传感器技术
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2013
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IF 1.789
Juan Liu,Wenbin Guo,Fengdong Qu,Caihui Feng,Chao Li,Linghui Zhu,Jingran Zhou,Shengping Ruan,Weiyou Chen
Pristine and vanadium-doped In 2 O 3 nanofibers were fabricated by electrospinning and their sensing properties to H 2 S gas were studied. X-ray diffractometry (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were used to investigate the inner structure and the surface morphology . The H 2 S-sensing performances were characterized at different temperatures ranging from 50 to 170 °C. The sensor based on 6 mol% V-doped In 2 O 3 nanofibers exhibit the highest response, i.e. 13.9–50 ppm H 2 S at the relatively low temperature of 90 °C. In addition, the fast response (15 s) and recovery (18 s) time, and good selectivity were observed.
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
高影响因子
Chemosensors
·
2025
·Vol. 13
·期 7
·239
·
IF 3.7
Hongtao Wang,Yang Liu,Yuanchao Xie,Jianan Ma,Dan Han,Shengbo Sang
Mesoporous ZnO/ZnCo2O4nanocomposites with excellent gas-sensing performance were synthesized using the Ostwald ripening method. The as-prepared ZnO/ZnCo2O4comprised aggregated monodisperse nanoparticles, and the nanoparticle size grew with increasing thermal treatment temperature. Increasing the calcination temperature did not significantly change the overall size of the ZnO/ZnCo2O4nanocomposites, but the pore size and specific surface area were noticeably affected. The gas-sensing results showed that ZnO/ZnCo2O4composites calcined at 500 °C exhibited the highest response to H2S at 200 °C, with a detection limit of 500 ppb. The ZnO/ZnCo2O4composites also exhibited remarkable selectivity, response/recovery speed, and stability. Their excellent gas-sensing performance might be attributed to their porous structure, large specific surface area, and the heterogeneous interface between ZnO and ZnCo2O4. This work not only represents a new example of the Ostwald ripening-based formation of inorganic hollow structures in a template-free aqueous solution but also provides a novel and efficient sensing material for the detection of H2S gas.
研究领域:
材料科学
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传感器技术
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2016
·
IF 4.758
Ting-ting Yu,Xian-Fa Zhang,Ying-Ming Xu,Xiao-Li Cheng,Shan Gao,Hui Zhao,Li-Hua Huo
CdO-decorated hierarchically mesoporous NiO nanofilm with wrinkle structure was grown in-situ on ceramic tubes via a simple hydrothermal reaction without any surfactant or template. The as-prepared nanofilm was characterized by scanning electron microscopy (SEM), X-ray powder diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectra (XPS) and Brunauer–Emmett–Teller (BET) analyzes. It exhibits a nanoparticulate film with uniformly self-assembled wrinkles. These wrinkles are thin porous nanosheets that are further constructed by subnanometer nanoparticles . Compared with the NiO porous nanowall arrays, the 2.01 mol% CdO-decorated NiO film exhibits not only higher response to part per billion (ppb) levels (0.5–100 ppb) H 2 S at low temperature (92 °C), but also higher selectivity to other reducing gases compared with pure NiO porous nanowall arrays. The lowest detection limit of the NiO film after CdO decoration decreases down to 0.5 ppb while that of pure NiO is 1 ppb. The mechanism of the enhanced H 2 S sensing for 2.01 mol% Cd-decorated NiO film is also discussed in detail.
研究领域:
材料科学
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化学传感器
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
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2023
·
IF 4.8
Yu Zhou,Hui Gong,Hou-Jing Liu
Efficient, selective and highly sensitive detection of H 2 S is important for environmental protection and human security. Nanomaterials-based cataluminescence (CTL) sensors, especially metal-free catalysts, have been used for gas sensing. Herein, due to the efficient electron transfer and high specific area of silicon nitride (Si 3 N 4 ), combined with the strong electronegativity of fluorine and oxygen, we purposely synthesized F and O-modified Si 3 N 4 (F/O-Si 3 N 4 ) by engineering surface states and catalytic properties. We then used it to construct a H 2 S CTL gas sensor. Compared with other metal-based CTL sensors, the F/O-Si 3 N 4 -based CTL system exhibited high sensitivity and a longer lifetime stability. The detection limit was 0.027 μg mL −1 in the detection range of 0.49–8.17 μg mL −1 , and a relative standard deviation (RSD) of better than 3.3% were obtained. Further research demonstrated the luminescence mechanism, in which the rich oxygen vacancies of Si 3 N 4 promoted the adsorption of O 2 and the formation of F-Si sites due to the catalytic oxidation of H 2 S and the generation of SO 2 *. This served as the main emitter accounting for the strong CTL emission. This work is the first report of the application of Si 3 N 4 as a catalyst for CTL H 2 S sensing. This will expand the methods for enhancing the catalytic activity and practical applications of metal-free materials.
研究领域:
材料科学
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环境科学
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传感器技术
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2020
·Vol. 10
·期 14
·8332-8339
·
IF 3.119
Pinhua Zhang,Hongyang Zhu,Kaifeng Xue,Li Chen,Changmin Shi,Dongchao Wang,Jianfu Li,Xiaoli Wang,Guangliang Cui
2D heterostructures are promising gas sensor materials due to their surface/interface effects and hybrid properties. In this research, Cu2O/Fe2O3 heterostructure ordered arrays were synthesized using an in situ electrodeposition method for H2S detection at low temperatures. These arrays possess a periodic long range ordered structure with horizontal multi-heterointerfaces, leading to superior gas sensitivity for synergistic effects at the heterointerfaces. The sensor based on the Cu2O/Fe2O3 heterostructure ordered arrays exhibits a dramatic improvement in H2S detection at low temperatures (even as low as −15 °C). The response is particularly significant at room and human body temperatures since the conductivity of the arrays can change by up to three orders of magnitude in a 10 ppm H2S atmosphere. These good performances are also attributed to the formation of metallic Cu2S conducting channels. Our results imply that the Cu2O/Fe2O3 heterostructure ordered arrays are promising candidates for high-performance H2S gas sensors that function at low temperatures as well as breath analysis systems for disease diagnosis.
研究领域:
材料科学
·
传感器技术
·
气体检测
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
·
IF 9.4
Zhaorui Zhang,Jing Yang,Chonghui Zhu,Mengmeng Xu,Xiaohui Yan,Jinkui Chu,Xinjiang Zhu,Minghui Yang
Electrode materials are pivotal in fuel cell-based gas sensors, yet conventional Pt-based catalysts often suffer from limitations in electronic structure and stability, restricting the practical application of H 2 S detection. Here, we introduce a Pt catalyst supported by a titanium-tungsten nitride (TiN-WN) composite for an electrochemical H 2 S sensor. Leveraging the multilevel electron transfer of the Pt/TiN-WN composite, this sensor achieves electron accumulation on the Pt surface, yielding enhanced conductivity and abundant active sites for high H 2 S sensitivity. It achieves a response current of 12.2 µA, 1.7 times that of Pt/C (7.1 µA), and demonstrates excellent linearity (R 2 = 0.999), stability over repeated tests, and robust anti-interference capability. These findings mark a significant advancement in H 2 S sensing, offering a reliable solution for real-time monitoring and addressing key limitations of current systems.
研究领域:
材料科学
·
电化学传感器
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环境监测
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2021
·
IF 4.098
Xiao-Lan Zhao,Jia-Li Liu,Fa-Ting Xie,Tong Yang,Rong Hu,Yun-Hui Yang
In this paper, a simple, rapid, and low-cost colorimetric method was designed based on Co/Fe-MOFs-iodide composite for the quantitative detection of H 2 S. It is know that iodide can improve the catalytic activity of bimetallic porous material Co/Fe-MOFs via adsorption into the framework of MOFs. Herein, we demonstrate a novel strategy to enhance the peroxidase-like activity of MOFs. Compared to horseradish peroxidase (HRP), the kinetic measurement results show that Co/Fe-MOFs-iodide exhibits excellent affinity to substrates, promoting electron transfer. Due to the synergetic effect of Co/Fe-MOFs and iodide, and rapid electron transfer process, Co/Fe-MOFs-iodide demonstrates improved peroxidase-like activity. As a proof-of-concept application, a novel, highly sensitive H 2 S colorimetric method is established with a detection limit (LOD) of 0.33 nM. In the absence of iodide, LOD is approx. 200-fold higher than that of the amplified colorimetric assay. The proposed method can also accurately detect traces of H 2 S in serum samples.
研究领域:
生物化学
·
分析化学
✓ 已验证
DOI
PubMed
高影响因子
ACS Sensors
·
2022
·
IF 9.618
Haoming Sun,Meng Cao,Pinhua Zhang,Xiaojing Tian,Manli Lu,Lulu Du,Kaifeng Xue,Guangliang Cui
Magnetism is a promising external intervention for gas sensitivity based on a heterogeneous interfacial structure caused by the regulation of the heterogeneous interface conductivity and the surface oxygen adsorption. In this study, Cu2O/NiO heterostructure-ordered nanoarrays were prepared with a two-dimensional (2D) electrodeposition in situ assembly method for H2S gas detection at room temperature under the action of a magnetic field. The nanoarrays were multibarrier structures with a strictly periodic structure that was greater than hundreds of microns in size. The experimental data confirmed that the response of 50 ppm of H2S based on the nanoarrays was improved by nearly 61% with a relatively weak magnetic field. Particularly at a low concentration (≤20 ppm), the effect of the magnetic field enhancement on the sensitivity was more obvious. We attributed the enhancement of the gas sensitivity with the magnetic field to the regulation of the Cu2O–NiO interface conductance and the surface oxygen adsorption. This study demonstrated that a magnetic field could significantly enhance the gas sensitivity based on heterostructures. Results of this study provide an important reference for the application of magnetism in gas detection and the design of new gas-sensitive materials.
研究领域:
材料科学
·
传感器技术
·
物理化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
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